<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script>
    let label = '';
    let isPrime = false;
    label = isPrime? 'isPrime':'non-isPrime';
    console.log(label);

    let options ;
    options = options || {};
    console.log(options);
</script>
</body>
</html>